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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
Presentation Title Modeling Anisotropic Hardening and Nonlinear Elasticity under Loading Path Change
Author(s) Myoung-Gyu Lee, Jeong-Yeon Lee, F. Barlat, Jinwoo Lee
On-Site Speaker (Planned) Myoung-Gyu Lee
Abstract Scope A distortional hardening approach without kinematic hardening concept is proposed to capture complex flow stress responses under different loading path changes. The proposed model enables to reproduce the Bauschinger effect in metallic materials during load reversal, and the latent hardening and softening under orthogonal loading paths. The model is described in the continuum scale level and FE implementation is made for practical use of commercial software. In terms of the elasticity model for metallic materials under prior plastic deformation, a concept of multiple surfaces is introduced to describe nonlinear and hysteretic elasticity. The anisotropic hardening and nonlinear elasticity models have been validated by different experimental procedures which include two-stage tensile test, loading-unloading-reloading test and simple shear-reverse shear test. Finally, FE simulations of springback and dent resistance of steel sheets are performed and the results are compared to experiments to demonstrate the accuracy and efficiency of the models.
Proceedings Inclusion? Planned: A print-only volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel In-situ Planar Biaxial Experiment
Advanced Cruciform Testing at the NIST Center for Automotive Lightweighting
An Experimental and Microstructural Investigation of Biaxial Bauschinger Effects in Sheet Metals
An Experimentally Validated, Microstructure Based Model for Forming of Low-symmetry Alpha-uranium
Biaxial Loading of Anisotropic Al-6022-T4 Sheets Using Cruciform Specimens
Determination of Bending Limit Curves for Aluminium Alloy AA6014-T4: An Experimental Approach
Dilational Response of Voided Polycrystals
Effect of Complex Strain Paths on Microstructure Evolution Studied by In-situ Neutron Diffraction
Evalution of Formability in Aluminum Alloys across Strain Rates Using Digital Image Correlation Technique
Hardening Behavior of 316L SS Subject to Biaxial Strain Path Change: Multiscale Modeling for Guiding Experiments
Inflation of Stainless Steel 304L Microtubes under Axial Tension and Internal Pressure to Assess the Plastic Anisotropy
Modeling Anisotropic Hardening and Nonlinear Elasticity under Loading Path Change
Multi-scale Analysis of Springback in Microforming of Thin Nickel Sheets
On the Non-proportional Deformation of Sheet Steel Using In-situ Diffraction and Modelling Methods
Onset of Plasticity via Relaxation Analysis (OPRA)
Optimization of Biaxial Tensile Test Specimen Design
Predicting Cyclic Deformation of AA6022-T4 and DP590 Using Polycrystal Plasticity
Sensitivity Analysis of the Bauschinger Behavior on Bending Springback for Prestrained Sheets
The Influence of Deformation Mechanisms on Forming of Commercially Pure Titanium Sheets

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